NIT No. 35, Item No. 30 (2022-23)

LT Distribution panel sheet steel enclosure made out of 2mm CRCA sheet totally enclosed, powder coated free standing, floor mounted type, dust& vermin proof, outward opening, lockable double doors having hidden hinges and a bolted back cover both using non-deteriorating neoprene rubber gaskets to provide IP-54 protection .The each part of the fabricated panel will be strictly subjected to seven tank treatment. The various components, assemblies and sub equipments of the panel will be as per standard given in relevant IS. The bus bar Size: 20 mm X 10 mm (suitable for 200 Amp.) of the panel will be shaped out of high conductivity, electrolytic conductor and shall be liberal sized in aluminium. The control wiring of the panel will be done with PVC flexible copper wires of 1.5mm cross section. Each wire will be terminating with a ferule crimped to the wire. Size of Panel : 1200 mm x1000 mm x 375 mm. Having following components of approved make. The LT panel shall be mounted on the suitable base frame of MS angle size :- 50mmx50mmx6mm with 450mm depth., Note:-Each LT Panel will contain four No. of pump operational systems.

MCCB 415V, 4 Pole, 3 phase High breaking capacity 50 KA 50 Hz, 200 Amp with spreader & handle . Make:- L&T/Siemens

MCCB 415V, 3 Pole, 3phase 50KA 50Hz, 63 Amp with spreader & handle. Make:- L&T/ Siemens/ DJB approved

MCB Single pole 6 Amp. Make:- L&T/Havells/DJB approved

MCB Triple pole 32 Amp. Make :-L&T/Havells/DJB approved

Over load relay range 14-23 Amp Make:- L&T/Siemens /DJB approved

Digital Amp. Meter:-Make AE/L&T/DJB approved

Digital Volt Meter 0-500 Volt .Make:- AE/L&T/DJB approved

Shunt power capacitor(Heavy Duty) 5 KVAR for reactive power management

Motor protection/phase failure Relay Make:- L&T/Siemens/DJB approved

Power contactor 220V 3phase 40 Amp. Make:- L&T/Siemens/DJB approved

Current Transformer 200/5 & 30/5. Make:- AE /Advance/DJB approved

Star-delta timer 0-30 sec Make:- Siemens/L&T/DJB approved

Indicating lights LED type RYB & On/OFF, Make:-L&T/Havells/DJB approved

Changeover switch on load for capacity 100 Ampere.

Auxiliary Relay Make:- Siemens/L&T/DJB approved

S/o of RCCB, 3 phase 415 volt AC , 40 Amp rating . Make:-Havells/ L&T/Siemens /DJB approved

S/o of 1.5 sq mm flexible 4 core copper wire for control wiring for remote push button station Make:- Finolex/Havells/Gloster/DJB approved

S/o of 6 sq mm flexible single core copper wire for control wiring for power wiring Make: Finolex/ Havells/ Gloster/ DJB approved

Providing of aluminium armoured cable of size : 3.5 core X 95 sq mm Make :- Havells/Gloster/ Grandly / DJB approved

Automatic phase sequence contractor 50 Amp with automatic manual facility corrector with control accessories auto manual switch, single phasing protection delay power supply etc.

SMPS power supply 24 volt DC & Auxiliary Rely and electronic card system with on delay clutch & off delay clutch .

Pump start stop button station installed at individual hydrant with wiring and other accessories required as per site .

Fixing of the above components in panel enclosure with terminal blocks, channels, ferrules, thimble, support insulator on bus bar required hard wares, control wiring in 1.5 sq mm single copper wire complete in all respect with the help of dash fastner etc. as per site requirement.

Loading ,unloading by crane or heavy labour and cartage up to site cleaning & dressing the surface for installation of the panel at site on base frame, laying of cable, termination of cable both incoming & out going

Testing & commissioning of panel, as per required parameters with relevant IS Testing of the panel prior to switching on as follow :- (1) Continuity and earth testing (2) Meggaring of all equipments for phase to phase, neutral to body, neutral to earth and phase to earth. (3) Checking for all tightness of nut and bolts (4) Alignments of doors etc. (5) Interlocking tests.

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